/*
 * Copyright (c) 2015, 2018, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */
package jdk.graal.compiler.replacements.test;

import java.lang.reflect.Executable;
import java.lang.reflect.Field;

import org.junit.Assert;
import org.junit.Test;

import jdk.graal.compiler.api.replacements.SnippetReflectionProvider;
import jdk.graal.compiler.core.test.GraalCompilerTest;
import jdk.graal.compiler.replacements.ReplacementsImpl;
import jdk.graal.compiler.replacements.classfile.ClassfileBytecodeProvider;
import jdk.vm.ci.meta.JavaConstant;
import jdk.vm.ci.meta.JavaKind;
import jdk.vm.ci.meta.MetaAccessProvider;
import jdk.vm.ci.meta.ResolvedJavaField;
import jdk.vm.ci.meta.ResolvedJavaMethod;
import jdk.vm.ci.meta.ResolvedJavaType;

public class ReplacementsTest extends GraalCompilerTest {

    /**
     * Gets a {@link ClassfileBytecodeProvider} that enables snippets and intrinsics to be loaded
     * from the system class path (instead of from the JVMCI class path or Graal module).
     */
    protected final ClassfileBytecodeProvider getSystemClassLoaderBytecodeProvider() {
        ReplacementsImpl d = (ReplacementsImpl) getReplacements();
        MetaAccessProvider metaAccess = d.getProviders().getMetaAccess();
        ClassfileBytecodeProvider bytecodeProvider = new ClassfileBytecodeProvider(metaAccess, d.getProviders().getSnippetReflection(), ClassLoader.getSystemClassLoader());
        return bytecodeProvider;
    }

    @Test
    public void testSnippetReflectionprovider() {
        SnippetReflectionProvider snippetReflection = new SnippetReflectionProvider() {

            @Override
            public Class<?> originalClass(ResolvedJavaType type) {
                return null;
            }

            @Override
            public Executable originalMethod(ResolvedJavaMethod method) {
                return null;
            }

            @Override
            public Field originalField(ResolvedJavaField field) {
                return null;
            }

            @Override
            public <T> T getInjectedNodeIntrinsicParameter(Class<T> type) {
                return null;
            }

            @Override
            public JavaConstant forObject(Object object) {
                return JavaConstant.NULL_POINTER;
            }

            @Override
            public <T> T asObject(Class<T> type, JavaConstant constant) {
                return null;
            }
        };

        Assert.assertEquals(snippetReflection.forBoxed(JavaKind.Double, 42.42D), JavaConstant.forBoxedPrimitive(42.42D));
        Assert.assertEquals(snippetReflection.forBoxed(JavaKind.Object, null), JavaConstant.NULL_POINTER);
    }
}
